title: [Schwannoma of the chest wall showing a bead-like appearance;report of a case].
abstract: A 35-year-old man with a chest abnormal shadow was referred to our hospital. Computed tomography(CT) revealed a bead-like shaped mass along the right 7th rib. The lesion appeared to have 2 narrow parts and was divided into 3 round portions. T2-weighted images of the magnetic resonance imaging(MRI) revealed marked hyperintensity in the peripheral portions and nodule-like intermediate signal intensity in one of the central zone of the round portions, which is so-called "target appearance". The bead-like mass with 3 round portions revealed to be a mass of the right 7th intercostal nerve. The tumor was diagnosed as benign schwannoma of mixed Antoni type A and type B histologically.
authors.affiliation: Department of Thoracic Surgery, Numazu City Hospital, Numazu, Japan.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Takanashi
authors.forename: Norikazu
authors.initials: N
authors.lastname: Urabe
mesh_terms: D000328:Adult; D006801:Humans; D008297:Male; D009442:Neurilemmoma / Q000000981:diagnostic imaging / Q000473:pathology*; D013899:Thoracic Neoplasms / Q000000981:diagnostic imaging / Q000473:pathology*; D014057:Tomography, X-Ray Computed